Window latch



- C. A. LEWIS WINDOW LATCH,

Filed July 5, 1926 INVENTOR;

Y Em ATTORNEY.

Patented Aug. 28, 1928.

UNITED STATES PATENT OFFIC CLAUDE A. LEWIS, OF HOUSTON, TEXAS, ASSIGNOR TO AMERICAN WINDOW COMPANY. A CORPORATION OF DELAWARE.

WINDOW LATCH.

Application filed July 3, 1926. Serial No. 120,269.

My invention relates dow sashes.

It is an object of the invention to provide to a latch for wina latch for a: window sash which will automatically latch closed.

It is another object to provide a latch for a window sash having an operating handle thereon which serves as a means of unlocking the sash and also of raising the sash after it is unlocked. It is also desired that the latching handle be adapted for removal when desired and with a minimum amount of manipulation.

It is a further object to provide a latch and a housing therefor which is adapted to be easily and economically applied to the window sash.

Other objects and advantages of the invention will appear from the more detailed description which follows.

Referring to the drawing herewith, Fig. 1 is a central vertical section through the broken lower end of the window sash and the sill showing my invention applied thereto. Fig. 2 is asimilar view of the latch and the housing detached and illustrating the latch in a different position; Fig. 3 is a front view of the housing and latchshowing the handle removed. Fig. 4 is a rear elevation of the handle removed. Fig. 5 is a broken horizontal section illustrating the attachment of the handleto the housing, said section'being taken approximately on the line 5-5 of Fig. 1, the latching means being omitted. Fig.6 is a front elevation of 'the'latching plate to be fixed upon the window casing to receivet-he latch. Like numerals of refer ence are employed to designate like parts in all the views.

In Fig. 1, I have shown the window sill 1 and the stool 2 in broken section, the side of the stool adjacent'the sill being vertical at 3 and having a recess 4 to receive a look ing plate 5. The shape of this plate is shown best in Fig. 6. It has two openings 6, one at each side, to receive screws by means of which it is secured to the stool of the window. The lower portion is cut away centrally at 7 to provide an opening to receive the latch. Above this opening the plate is beveled up wardly at 8 and the central portion of the plate is extended slightly higher than are the two sides adjacent the beveled portion,-

..ow'n at 9 in position when the sash is The window sash has its lower transverse member 10 shaped to fit. the sill 1 and is therefore beveled downwardly from the inner side. Its upper side is grooved at 11 to receive the glass 12.

On the inner side of the sash and centrallv thereof is cut a diagonal recess 13. This recess is of sufficient width to receive the housmg 1 1 for the latch. Said housing is made up of sheet; metal, the inner face of which is inclined to fit within the recess 13, the lower side being inclined upwardly toward the inside, thus providing a bottom wall 15 of the same inclination as the sill. The upper end of the housing is provided with a forwardly extending flange 16 and the sides of the housing toward the upper portion thereof are extended laterally to widen the housing at the forward end, as shown at 17 in Fig. 5, and the forward edge of the side members are bent outwardly to form flanges 18 which form slideways for the handle plate 19. These laterally extending flanges 18 are cut away centrally at 20 so as to receive the handle plate, as will be later described. The enlarged portion 17 of the housing projects forwardly from the sash as shown in Fig. 1.

Pivoted within the narrow portion of the housing is a latch member 21. It pivots upon a pin. 22 at the upper shallow portion of the housing, said pin extending from one side wall to the other. The rearward side of the latch member is approximately straight to a point adjacent its lower end, where it is'round ed off at 23: The forward side of the lower'end has a beveled or cam face 24 and above said cam face is a shoulder 25 formed by a recess out within the forward face of the latching dog. Above this shoulder, the face is beveled forwardly at 26 and above this beveled portion is an upwardly extending point 27. To the rear of this point is a comparatively deep recess" 28, above which the forward face is beveled upwardly at 29 to co-operate with the operating handle. The upper end of the latching dog has two forwardly extending arms 30 between which is a rod-receiving recess 31.

The handle plate 19 is of approximately the same length as the upper widened portion of the housing. Its edges are curved inwardly at each side to form a channel 41 to fit about the flanges 18 to slide thereon. The side flanges are cut away centrally at 32 to provide in means one pair cf the si e flanges 18 of thehousing The upper endof the plate is curved forwardly androunded off at 33 to provide a handle. The lower end is bent inwardly at right angles toth e plate to form a base '34- matte inner edge'of the base is inclined downwardly at toco-operate with the latch. Mounted in the base. 34.

is an upright pin or rod 36, the upper end'of which is curved forwardly and, extended through the plate at 37 and riveted in position, Abontfthe .rodfifi spiral spring 38, wliich,,when, the handle. is raised is adapted to. contact with thearms, 39 ,upon the latching dog 'llhehofusingiS.secured in position in the recess'13 by screws on, any other dered meant en thewgndow, sashis in. raisedgposition,

handle, plate 191 may bein. the position shown. in, F-ig.. .1 The latching. dog inay then extend. downwandly, as gthcre shown, the expo'sition,being,immaterial, lVhenth'e the, upper v wall sash i'slqwened, the base 3 ,1 of the handle plate willicontaet with the;upper edge-9 of the latching plate ,5; and be raised,.;npwardly towand,,the,full, line ,position shown. in Fig. 1. 7 The, spring, 381;. willengage ,thearins 30 upon provide,spadefor;theniovement,of, said point tglat'gliing "po'sitio,n hen the, latch is: to be disengaged andgthe sash raised, the-handle 33 is pulled'upwardly,, The. endfifp thereof will co, :tact with the face 29 of the, latch and force the. latch: inwardly releasihgit, froin the latching; plate,,with,,the,,latch in the dotted line position. of 1'; the handle 1nay be he ra sed fu th unti he p 6 s i e 1h: of,;th e h011$i g..and any therspwar null w ifl. a s e (sashlliia h pha idlerlat i i amm r to lean! et i ilie akn-pa nt h, e

ljeasdjthe ,PQlIliJ -ZT ,from the handle and the latch andtheinpushed inwardly so, that. the handle may, bedropped tog. Fig;. 2 position,

aiietliiQhaL -h flanges 5 18. l elease he channels ljl of thejplate ,and the handle; may

be h a alle lf teaaar moredn i is e-i l; a ed andle Plate is placed int ,c Fig 2fpdsi ion and raisediu to ngag l e -.haeeel ,alt i h' he. fl a es 8 andtherod 36 within the recess3l of the latch, When the handleis thenlraised into Fig. 1 position, the latch will be thrown forwardlyand the point 27 will engage behind theedgelj 'ofgthe handle plate so that the latch cannot move inwardly away from the plate ,5, beyond the Fig. 1 dotted line position. illls will assure the cngagen'ient of the latch with the, latching. plate when the sash is closed, and also prevents accidental removal of thehandleplate V 1 The shape of the latch housingwill be of advantage int-hat .ar diagonalcut inltheysash ofthe properwidthris all that is necessary to receive ,ligq ltiseasily securedin position by screws before the handleplate is placed on the housing.v The-latch: engagesthe. plate automatically and releases. automatically when. the handle 33 is, raised to elevate the sash; e

The. .action of, the latch, is, simple and posi tine. and ;the construct-ionis economical to manufacture, t is easy, of access from the inside but will resist all attempts to raise the sash from the outside.

Having, thus described my invention, what Igclai nas new and -desireto protectzbyLetters Patent'is:

i 1. In combination with a windqw sash and easing, means for latching the window sash to the casing, comprising a shouldered plate on, said casing, a pivoted latching dog, on said sash, adiandle: slidablerelativ e to said dog, neans onsaidhandle cooperating with said dog to force it munching engagement with, saidl plate, andlmeans onfsaid handle o. t ew aid doa out at i g P si o when sa idhandleis raised, to elevate said Sasha 2.; In ,coinbination with av window sash and casingfmeans for latching the window sash to thecasing, COmBrising ashouldredplirte on nsaidlcasingsa pivoted' .latchin-g dog on said-t sasl1,,a,handle slidablerelatively to said dog, means on said handle cooperating with saidxlog to forceitfinto latching engagement with. said'plate, a nd',means, on sai d handle to throw saidfdog .out" of latching position when said handle israised to elevate said sash, said handle being removable fromsaidsash.

3.11;. co nbinationwith a ,window sash and casing, means, ,for latching the window. [sash to the, casing, comprising, ashoulde 'ed plate Qnsaid ea ing, a p e e ll t h g g n s id sash,a,,hagndl'e,slidable relative to said dog, arms onsaiddcg da pring .on-i i vih n le engaging said, arms to, force ,said dog resil iently; into, latghihgengagement with. said plate and, means, ,onlsaid. handle to throw said dog out, of: latching position when said handle israised Ltoeleyate saidisash, i

4.; Inpornbinatien with a window. sashand casing, means, for latching the window sash to the, :0 asing, comprising. a shouldered plate on said casing, a pivoted latching dog on said sash, a handle slidable vertically relative to said dog, arms on said dog and a spring on said handle engaging said arms to force said dog resiliently into latching engagement with said plate, and means on said handle to throw said dog out of latching position when said handle is raised to elevate said sash, said means also serving to limit the movement of the dog from latching position.

5. In combination with a window sash and casing, a latching plate on said sash, a hous ing set in said sash adjacent said plate, a

latching dog pivoted to move in said housing, ashoulder on said dog to engage said plate, a handle closing the forward side of said housing, means on said handle to force said shoulder into engagement with said plate, and means to limit the movement of said dog from latched position.

6. In combination with a window sash and easing, a latching plate on said sash, a housing set in said sash adjacent said plate, a latching dog pivoted at its upper end to move in said housing, a shoulder on said dog at its lower end to engage said plate, a handle closing the forward side of said housing, means on said handle to force said shoulder into engagement with said plate, and means on said handle to limit the movement of said dog from latched position.

7. In combination, a window casing, a window sash, a latching plate on said casing having a recess to receive a latch, a triangular-shaped housing set in a diagonally-cut slot in said sash adjacent said plate, and a latching dog pivoted to move in said housing and engage in said recess in said plate. a handle slidable on said housing and engaging said dog, said handle being removable from said housing when said handle is adjusted vertically thereon.

8. In combination, a window casing, a window sash, a locking plate on said casing having means thereon to engage a latch, a triangular-shaped housing set in a diagonally-cut slot in said sash across the forward side at the lower end thereof adjacent said plate, and a latching dog pivoted to move in said housing and engage said plate.

9. In combination, a Window casing, a window sash, a latch receiving plate on said casing, a housing in said casing adjacent said plate, a latching dog pivoted at its upper end in said housing, the lower end of said dog having a. plate engaging shoulder, a handle slidable on said housing, a spring on said handle engaging the upper end of said dog to press said dog into latching engagement with said plate, said dog being released when said handle is raised.

In testimony whereof I hereunto afiiX m signature this 29 day of June, A. D. 1926.

CLAUDE A. LEWVIS. 

